Streptococcus pneumonia is mostly found in pairs and is gram-positive bacteria. Louis Pasteur first isolated them in 1881.

Penicillin was discovered in 1928 by Alexander Fleming. However, its mass production for commercial use only started in the year 1941.

Cell proliferation and DNA replication are done using Okazaki fragments. During DNA replication, the Okazaki fragments are formed as lagging strands.

The first virus that was discovered and developed was the Tobacco mosaic virus. It was discovered by Dmitry Ivanovsky, who was a Russian microbiologist between 1887 and 1890.

A Paramecium has 2 nuclei, namely, macronucleus and micronucleus. Some other single-celled organisms, such as amoeba, also have 2 nuclei.

Vaccine against yellow fever was discovered and developed by Max Theiler. He received a Nobel Prize in Medicine for the same in 1951.

Bacteria are single-celled microorganisms, and they reproduce through binary fission. The human body has more bacteria than the number of cells.

Plasmodium is a unicellular eukaryote and is responsible for causing malaria in humans. Infected mosquitoes are the source of the spread of these parasites in humans.

Tuberculosis is a bacterial infection that is treated using antibiotics. The antimicrobial drug isoniazid is the most common drug to treat this disease.

Two virus variants, namely Variola major and Variola minor, together cause the disease smallpox. Edward Jenner discovered the vaccine for this disease in 1796.